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Finding the Fourth Proportional to 426,636.38, 640,141.18 and 202,157.24

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Solution

The fourth proportional to 426,636.38, 640,141.18 and 202,157.24 is: 303,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,636.38 : 640,141.18 = 202,157.24 : x
  2. Step 2: Convert to fraction form
    426,636.38/640,141.18 = 202,157.24/x
  3. Step 3: Cross multiply
    426,636.38x = 640,141.18 × 202,157.24
  4. Step 4: Simplify right side
    426,636.38x = 129,409,170,453.04
  5. Step 5: Solve for x
    x = 129,409,170,453.04/426,636.38
  6. Step 6: Final answer
    x = 303,324.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.